Feed-water heater



G. H. GONKLIN.

(No Model.)

FEED WATER' HEATER.

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UNITED STATES.`

PATENT OFFICE.

GILBERT H. CONKLIN, OF RIVERHEAD, NEW YORK.

FEED-WATER HEATER.

SPECIFICATION forming part of Letters Patent No. 493,981, dated March21, 1893. Application tiled December 5 1892. Serial No. 454,198. (Nomodel.)

T0 all whom, it may concern:

Be it known that I, GILBERT H. CONKLIN, a citizen of the United States,and a resident of Riverhead, in the county of Suffolk and State of NewYork, have invented certain new and useful Improvements in Feed-VVaterHeaters; and I do hereby declal'e that the following is a full, clear,and exact description of the invention, which will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, which form a part of thisspecification.

My invention relates to improvements in feed-water heaters for steamboilers, the object being to provide an improved construction ol thesame whereby I secure superior results with respect to simplicityeconomy, and efficiency in operation.

The invention consists in the novel construction and combination ofparts hereinafter fully described and claimed.

In the accompanying drawings: Figure l is a sectional elevation of asteam boiler and a feed-water heater constructed in accordance with myinvention. Fig. 2 is a cross section of the same. Fig. 3 is a sectionalelevation on an enlarged scale of the feed-water heater. Fig. 4 is across section of the saine. Fig. 5 is a sectional elevation of asafety-valve used in connection with the force pump by which the feedWater is supplied to the heater.

In the said drawings the reference numeral l designates a steam boilerof any suitable construction, being shown in the present instance as anupright consisting of two concentric cylinders 2 and 3 connectedtogether at their top and bottom, forming a fire chamber 4, providedwith a grate 5. These cylinders are surrounded by a cylindrical casingor jacket 6, with which and the tire chamber, communication isestablished by means of a number of radial tubes passing through thecylinders 2 and 3.

The casing or shell is provided with asmokestack 7, and a short pipe 8,near the upper end provided with a damper 9. At its lower end the boileris provided with a blow-off pipe l0.

The numeral 12 denotes the feed-water heater, consisting of a casing 13,two concentric cylinders 14 and 15 connected together at top and bottomforming a water space 1G. Passing radially through the cylinders are anumber ot' radial tubes or lilies 17. At its lower end the waterreceptacle is provided with a pipe 18, leading to the boiler.

Located within the inner cylinder 14 is a vertical water tube 22connected with the water receptacle by means ot` a pipe 19, and at itsupper end is connected with the boiler by means of a pipe 2Q.

To the lower end of the casing 13 is secu red an extension 2l, formedwith an intermediate annular recess 22a. In this extension is located aplug 23, provided with a peripheral recess 24, coinciding with recess22a. This plug is hollow, being closed at its lower end by a screw plug25, and at its upper end provided with a valve-seat 26, and intermediateits end is formed with a number of holes or passages 27, for the passageof water from spply pipe 28.

In the water tube 22 is located a bob-float 29 secured to a valve-stem30, provided with a conical head 3l. The lower end ot this valve stem isprovided with a conical valve 32.

The numeral 34, denotes a pipe by which the exhaust- Isteam from thecylinder is carried to the water-heater.

The operation is as follows: The water is fed to the heater and boilerby means of a force-.pump or other suitable device, raising thebob-float and the valve-stem and its valve and cutting o the supply ofwater. The exhaust steam from the engine will be carried to the shell orcasing 13 by pipe 34 and passing through the pipes or lues 17, will heatthe water in the water receptacle. As the water level in the boiler andheater lowers, the bob-float will be correspondingly lowered opening thevalve and allowing the water to again be fed until the proper level isreached.

In Fig. 5 I have shown an improved safety- `valve to be used inconnection with my invention. In said figure the numeral 35 designates acylindrical casing or tubehaving a screw-plug 36, at its upperend,provided with a central bore or aperture 37 in which works a hollowpiston-rod 38, provided at its lower end with a piston 39. Surroundingthe piston rod is a coiled spring 40, which presses the piston or valve39 down upon its seat. Connected with the lower end ot the cylinder 35,

is a valve casing 41, having a valve seat 42, and a valve 43, secured toa valve-rod 44, passing up through the bottom of casing 35, into thehollow piston-rod 38, and provided with a head 45. Intermediate of thevalve 43 and the bottom of casing is the pipe 46 connected with thesupply pipe 28.

The numeral 47 designates a portion of the force pump, and 4S the pipeleading to the source of Water supply provided with a valve 49.

The operation is as follows: Vhen the boiler is to be supplied withWater the pump is operated in any suitable manner, the valves 49 and 43alternately opening and closingv as usual. W hen the boiler has receivedthe proper amount, the bob-iioat will close valve 32, causing the Waterfrom the source of supply to be forced up piston 39 until the shoulder50 thereon strikes the head 45, raising valve 43 from its seat andretaining it in such position, and causing valve 49 to close, so that noWaterwill be supplied to the pump. Then the bob-float lowers, however,and opens valve 32, the piston will descend and valves 49 and and 43again alternately open and close to supply the feed Water heater andboiler.

Having thus described my invention, what I claim is 1. In a feed-.Waterattachment the combination with a, steam boiler of an inner and an outerconcentric cylinder forminga water receptacle connected with saidboiler, a water tube located in said inner cylinder and connected withthe water receptacle and with the boiler, the extension to said tubehaving an annular recess, the hollow plug located in said extension andprovided with a corresponding recess and with water passages, the supplypipe, the bob-float, and the valve-stem secured thereto provided with aconical valve, substantially as described. v

2. The combination with a steam boiler, of the feed water attachmentcomprising an inner and outer concentric cylinder forming a waterreceptacle connected with said boiler, a water tube located Within theinner cylinder and connected with the Water receptacle and boiler, thebob-float located in the water tube provided with the valve stem andvalve, the hollow plug having a valve seat in its upper end andconnected with a supply pipe, the safety valve comprising a casing ahollow piston rod, a coiled spring,a piston, having a central bore and ashoulder, the valve rod provided with a head, and a valve the valvecasing connecting with the supply pipe leading to the water tube, andthe pipe and valve communicating therewith and with the source of Watersupply, substantially as described.

In testimony that I claim the foregoing as my own I have hereunto afxedmy signature in presence of two witnesses.

GILBERT H. CONKLIN. Vitnesses:

WILLIAM L. SNELL, WILLIAM F. FLANAGAN.

